Flanging-machine



(No Model.) 3 Sheets Sheet 1.

R. A. CARTER.

PLANGING MACHINE.

N0. 313,917. Pm ted Mar. 17, 1885.

3 Sheets-Sheet 2.

R.A.CARTER.

FLANGING MACHINE.

(No Model.)

Patented Mar. 1'7, 1885.

W L N b mwxww mw=lmimm (No Model 3 Sheets-Sheet 3.

R. A. CARTER.

FLANGING' MACHINE.

No. 313,917. Patented Mar; 17, 1885.

In Illk M MM WITNESSES: INVENTOR Q K N. 2? 145 N. PETERS. Plwm-Lnnu m w. Washington. D. c.

1 certain parts being shown in section.

the table-hinge.

bed or foundation.

UNITED STATES PATENT OFFICE.

ROBERT A. CARTER, or PITTSBURG, PENNSYLVANIA.

FLANGlNG-MACHINE.

SPECIFICATION forming part of Letters Patent. No. 313,917, dated March 17, 1885.

Application filed November 30. 1883. (No model.)

5 sylvania, have invented or discovered a new and useful Improvement in Flanging-Machines 5 and I do hereby declare the following to be a full, clear, concise, and exact description thereof, reference being had to the ac- 10 companying drawings, making a part of this specification, in whichlike letters indicating like parts-- Figure l is a plan View of my improved hanging-machine. Fig. 2 is a side elevation,

is a plan View showing a modification of the reversing device. Fig. 4 is an enlarged sectional detail view. Fig. 5 is an edge view of the plate-carrier. Fig. 6 is a detail view of Fig. 7 is a detail view showing the mechanism for adjusting the lower roll.

In an application filed October 25, 1883, Serial No. 109,968, I have shown and described 25 a machine for flanging the heads of circular or nearly'circular boilers.

The invention of this application relates to certain improvements on that machine, where by I am enabled to flange boiler-heads other 0 than circular or oval-as, for example, semicircular or square-or such other irregular forms as by their outline do not admit of the continued rotation of the plate in one direction during the flanging operation; and to 5 this end' my invention consists, in general terms, in the constructionand combination of parts, all as more fully hereinafter described and claimed.

A A are suitable standards, mounted on a In a suitable slot in each of these standards are mounted the journalboxes of the shaft (1 of the upper flanging-roll, 0. These journal-boxes are supported, as is usual, on springs, (not shown,) and are 5 pressed down against the springs by the usual depressing-screws, c o

On the outer end of the shaft O is secured the gear-wheel F, which meshes with the broad-face gearwheel F, and this latter is mounted on the shaft f, as are also mounted the reversing mechanisms consisting of the tight pulleys g and the loose pulleys 9. Over Fig. 3

these pulleys pass the belts g and 9 one of which is twisted, said belts being shifted by the shifting-rods g, which are automatically operated by mechanism to be hereinafter described.

To the rear standard A is secured an exteriorly'threaded sleeve, a, which surrounds the shaft 0. This sleeve is screwed into another interiorly-threaded sleeve, a, which is provided with two forwardly-projecting arms, a. The outer ends of these arms are provided with inwardly-projecting lugs a, which fit into an annular recess, 0, at the end of the roller 0. The sleeve a is provided with handles a whereby the sleeve may be turned for adjusting the roller 0 forward and backward.

In place of using a positively-driven lower roll, (I, as is usual, I prefer to mount this roller on a short shaft, d, one end of which is adjustably mounted in the forward bearing A, and the other end thereof in a block or standard, A, located in front of the standard A. The ends of the shaft (1 are supported by bearings d provided on their under side with a threaded socket into which fit the screw-rods d". For turning these rods d to adjust the roller d, intermeshing gear-wheels d are secured on their lower ends, and one of these gear-wheels d* meshes with the worm d suitably mounted on the frame of the ma chine. This lower roller or idler is driven by frictional contact with the plate being flanged.

In flanging-machines of this class the pivotal point of the swinging table is arranged in a plane passing between the flanging-rollers, and as it frequently happens in flan ging irregularly-shaped heads-2' 0., those other than circular-the plate while between the rollers will extend beyond the table, and therefore the pivotal point of the table should be in the same plane as the top of the table on which the plate rests while between the rolls; and to this end I construct the hinge of the table as follows:

On the front side of the front standard A are secured the blocks e, and on these blocks are formed the lugs e, which are circularly recessed on the upper side, as shown at 6 and r the under side is concentrically curved.

At each side of the inner end of the table B are formed lugs 79, which are slotted, and

securedon a shaft, '0, journaled in a standard,

A. On the outer end of this shaft 11 is secured the hand-wheel E. The toothed segment E is made of such a weight as to nearly counterbalance the table B, and the sizes of the segment-pinion and hand-wheel are so proportioned as to require only a slight exertion.

on the part of the workman to turn the table. The upper edges of the central slot, 12", of the table B are cut away, so as to form ways or guides b for the adjustable block H. To this block H is secured by bolts .90 the graduated plate H, and through the turned-down end it of this plate is passed the threaded rod h, which screws into the end of the table B. The rod h is held from longitudinal motion in the turned-down end it by the collars h and to the end of the rod is attached the handle If, whereby it can be rotated.

Transversely to the table B is arranged the guide-plate K, which is secured to the block H by the stud 7c,attached to the under side of the guide-plate and passing through a hole in the block II. This stud It is slotted at its end, and is held in place by the key k',driven into the slot under the block. The guide-plate K is formed with flanges k on each side and at its ends, which project beyond the sides of the table B. The inner ends of theflanges k abut against the sides of the table B, and serve notonly to brace and strengthen the projecting ends, but also to guide and steady the plate K in its movement along the table.

On the sides of the guide-plate K are attached the lugs 76", which serve as guides to the bed- L, which is niounted on the guideplate, and rests on friction-rollers secured to the under side of the guide-plate,.and pr 0- j ecta slight distance above the surface thereof.

- In the bedL is formed the undercut groove Z, in which are placed the screw-clamps Z, by whichthe plate in to be flanged is fastened to the bed.

On a standard, A secured to the crossbraces A of the frame of the machine, is pivoted the bar a, to the ends of which are secured the ends of the wire rope 0, which passes around the guide-pulleys o, bolted to the forward edge of the guideplate K;

On the wire rope 0 are placed the adjustable stops 0, and at the ends of the bed L are secured the tappets 1 From the bar non each side of the pivotal point extend the belt-shifters a and n Sufficient length of ropeshould be allowed at one end so that the part which passes around the guide-pulleys may be lengthened when the guide-plate K is moved toward the outer end of the table B. To keep this rope under tension during the upward movement of the table, the rope is passed under friction-rollers 00, which are secured to the table B in line with its pivotal movement.

On the table B, the plate H, and the front face of the standard A are arranged friction-rollers 1', which aid in the movement of the plate at during the flanging operation.

The operation of my machine is as follows: The square plate m, Figs. 1 and 2, is securely clamped on the bed L. Then by turning the screw h the block H, the guide-plate K, and the bed L are moved toward the rollers 0 and d until the plate at has been pushed bet-ween the rollers a distance equal to the depth of the flange to be formed. Then the bed L is slid along the guide-plate until one corner of the plate is between the rollers. After the plate has been properly adjusted the stops 0 are adjusted to regulate the movement ofthe reversing mechanism, and the roller 0 is screwed down into the plate m, and the machine is started.

'While the machine is in motion an operator turns the hand-wheel E thereby turning up'the table B. As the rollers c d rotate they draw the plate and the bed L along the guideplate K until the opposite corner of the plate is'between the rollers. At this point the tappet Z strikes one of the stops 0", thereby shifting the belts on the pulleys, and causing the rollers to rotate in the opposite direction until it reaches its original position, when the other tappet will strike the other stop, and the machine will be again reversed. During these reciprocating movements of the plate the operator is turning the wheel E thereby causing the bed B to turn upon its pivots. These movements are continued until the flange has attained the desired angle.

By making the upper roller adjustable I can change at will the depths of the flange on the plate during the flanging operation, and can also, when desired, so adjust the upper roll that the lower or idler roll will project a short distance beyond the upper roll, and thereby afford a support for the corner of the plate being flanged. Another important function is effected by making one of the rolls adj ustable t. 0., capable of being moved to and held in various positions.

In the flanging-machines now in use it is necessary for the removal of the flanged plate to first knock out the center pinwhich holds the plate in the table, then the table is lowered, leaving the plate with its upturned edge between the flanging-rolls. This plate is then forced out from between the rolls and allowed to drop on the table. This is quite a long and troublesome operation, as the plateis hot and quite heavy. In my machine, however,

ward end of the table B, (see Fig. 3,) and I may also attach the tappets Z to the plate m. The corners of the rectangular plate are not flanged in the machine, the flanging of each edge commencing a short distance from the corners, the unflanged I corners being brought to shape by hammer after the plate has been removed from the machine.

In flanging plates which are a little more than semicircular, I prefer to attach the tappet to the plate to be flanged, as shown in Fig. 3, and in place of attaching stops to the rope I arrange a slide, S, at each of the inner corners of the table.

In flanging the semicircular plates the guide-plate K and. bed L are removed, and the plate to be flanged is secured to the adjustable block H by a pin passing through the plate and a hole in the block H, as is clearly shown in an application No. 109,968, filed October 25, 1883. The straight portions of the semicircular plate are flanged by a machine provided with a reciprocating bed, as shown in Fig. 1, and the corners are shaped by hand. This slide S moves in an undercutgroove, t, in the table, and is provided with an outwardly-projecting arm, 8, which rests upon the rope 0, provided with the stops 0, against which the arms strikes when the slide is moved inward by the tappet Z striking against the friction-rollers s, secured to a pin projecting up from the slide into the plane of rotation of the tappet. \Vhen both the flanging-rolls are positively driven, they draw and stretch the fibers of the metal and tend to separate them during the flanging operation, but by substituting a roll rotated by the movement of the plate this injurious action is en tirely obviated.

I do not herein limit myself to the mechanism show'n-and described for operating and reversing the flanging-rolls, as many of known forms of such roll operating and reversing mechanism may be used.

In flanging-machines as heretofore constructed the rolls formed or secured on one end of a shaft journaled'in the frame of the machine project beyond such frame, and are supported at one end only; consequently, when the edge of the plate to be flanged is placed between the rolls and the rolls are sprung apart, forming a -shaped opening betweenthem, the large end of said opening being at the free or unsupported end of the rolls, hence when the rolls are rotated they tend to squeeze the edge of the plate from between them, causing it to bear with force against the pivot-pin and to bend or buckle I between the rolls and pivot-pin; but by providing bearings at each end of the lower roll,

as shown, this angular separation of the rolls is greatly if not entirely obviated, and consequently the edge of the plate is uniformly clamped by the rolls while rotating, in place of being forced from between the rolls by reason of their angular relation to each, as above stated.

What I claim as my invention is- 1. A flanging-machine having in combination a transversely-reciprocating rest or support, a pair of flanging-rolls, and a verticallyswinging table, substantially as set forth.

2. Ina plate-flanging machine, the combination of a swinging table having thereon a reciprocating support for the plate, rotating flanging-rolls, and an arm moving with the plate, and adapted to operate the roll-reversing mechanism, substantially as set forth.

3. In a plate-flanging machine, a swinging table having thereon a reciprocating support for the table and reversible rotating flangingrolls, in combination with an arm moving with the plate to be flanged, for automatically reversing said rolls, substantially as set forth.

4. In a plate-flanging machine, a swinging table, in combination with an upper positivelydriven roll and a lower roll driven by frictional contact with the plate to be flanged, substantially as set forth.

5. In a plate-flanging machine, atable having a plate rest or support, in combination with a positively-driven roll and a roll rotated by frictional contact with the plate to be flanged, substantially as set forth.

6. In a plate-flanging machine, the combination of the swinging table B, the longitudinally-adjustable block H, the guide-plate K, secured to said block, and the plate-bed adapted to slide on said guide-plate crosswise of the machine, substantially as set forth.

7. In a plate-flanging machine, the combination of a swinging table having a plate rest or support and a pair of reversible rotating flanging-rolls with reversing mechanism operated by the plate to be flanged, substantially as set forth.

8. In a plate-flanging machine, a table having a plate rest or support, in combination with a pair of flanging-rolls, and reversing mechanism operated by the plate to be flanged, substantially as set forth.

9. In a flanging-machine, a table having a plate rest or support, in combination with a ROBERT A. UARTER.

Witnesses:

R. H. WHITTLESEY, DARWIN S. WoLoorr. 

